Slot request for GA/BA flight () As a result of the continuous rise in demand for airport slots for general aviation at coordinated airports and the assumption that there will be a further increase in this traffic segment, an internationally valid format, known as the ( General aviation Clearance Request), to apply for slots has been developed. This format is described in detail below. 1. standard format The standard request consists of 3 main components. 1. Message Header N TVS064J 20MAY 000C680 0730LKTB D / RE.OKUGJ/ NTVS065J 22MAY 000C680 LKTB1100 D / RE.OKUGJ/ SI IF NOT AVBL PLS CFM NEXT LATER POSS GI BRGDS... 2. Flight detail line(s) 3. Footnote (s) 1.1. Header Type of request: - General aviation Clearance Request Message type for operation using flight designator plus flight number or the aircraft registration FLT = Slot request using flight number REG = Slot request using aircraft registration EFHK Airport at which slots are being requested: ICAO code Example: NPVT1234 17MAY 003C25B LATI1500 D N PVT1234 17MAY 003C25B 1545LKKU D NSEABC 05MAY 010C208 LZKZ0200 D N SEABC 05MAY 010C208 0230LZKZ D
1.2. Flight details lines The flight detail lines contain all of the necessary schedule information needed to request an airport slot. The following examples show the different format required to request either an arrival or departure slot. 1.2.1. Arrival slot Format KABC0123 08MAY 010C25A LFMN1300 D Type of flight Origin of flight (ICAO) + scheduled time of arrival (UTC) Seat number + aircraft type (ICAO) Date of operation Arrival flight number or A/C registration Action Code For an arrival, there is NO blank between action code and flight number. The scheduled time of arrival (STA) is stated without a blank after the airport of origin. 1.2.2. Departure slot Format K ABC0124 09MAY 010C25A 0900LZIB D Type of flight Scheduled time of departure (UTC) + destination airport (ICAO) Seat number + aircraft type (ICAO) Date of operation Departure flight number or A/C registration Action Code For a departure slot, there is a blank between the action code and the flight number. The destination airport is stated without a blank after the scheduled time of departure (STD).
Action Code The action code defines the exact intention of the sender and is always at the beginning of the line. Depending on the sender, following codes are possible in the format. Owner / Operator N New schedule D Delete schedule C Schedule to be changed R Revised schedule Action Codes Airport - Coordinator K Confirmation X Cancellation H Holding U Refusal / Unable W Wrong Flight number / Registration Both flight number and registration are possible.( Reference is made in the corresponding message header).a flight number combines a maximum of 7 letters and digits (2-3 letters followed by 1-4 digits with an optional letter as a suffix). Date of operation The date of operation refers to the scheduled UTC departure and arrival times at the airport to be coordinated. Aircraft Type Information referring to the type of aircraft being used consists of: - Number of seats (3 digits) - Aircraft type in ICAO format (4 letters) Numbers of seats and aircraft type are entered without a space in between. Routing and Time of flight Routing information consists of the origin or destination airport (ICAO Code, 4 digits) in regard to the airport being coordinated. The requested arrival or departure time at the airport being coordinated, is stated in UTC. Routing information and the requested timing are not separated by a blank. Type of flight The following service type codes can be used to define the flight: - D or N for General Aviation / Business Aviation / Air taxi - E for State flights (F A A / Government) - I for Diplomatic or Ambulance flights (defined in SI) - P for Positioning, Ferry, Delivery, Demo - T for Technical test flights 1.3. Footnote SI = Special Information (eg. Ambulance flight) GI = General Information ( eg. BRGDS Jon) Examples
Airport Slot Request Example N1 : Slot request for a departure flight using a registration (Action code N ) Airport being coordinated : Type of Aircraft : Flight details : Departure: Piper 42 Cheyenne III, Registration OKPIP 1240utc / 10MAY ENGM 1400utc / 10MAY N OKPIP 10MAY 006PAY3 1240ENGM D GI BRGDS... Possible replies from coordinator: K OKPIP 10MAY 006PAY3 1240ENGM D GI BRGDS Or if slot is not available U OKPIP 10MAY 006PAY3 1240ENGM D K OKPIP 10MAY 006PAY3 1250ENGM D GI BRGDS Example N2: Slot request for a departure using flight number or a call sign (Action code N ) Airport being coordinated: Type of Aircraft : Flight details : Departure: Piper 42 Cheyenne III, Registration OYPIP 1240utc / 10MAY ENGM 1400utc / 10MAY N PVT123 10MAY 006PAY3 1240ENGM D / RE.OYPIP/ GI BRGDS... Possible reply from coordinator: K PVT123 10MAY 006PAY3 1240ENGM D / RE.OYPIP/ GI BRGDS... The coordinator s replies are also in the standard format as described above. The only difference is in the use of the action code.
Example N3: Slot request for an arrival and departure with different flight numbers or call signs (Action code N ) Airport being coordinated: Type of Aircraft: Flight details: Departure: Departure: Gulfstream G-159, Registration N125GA Flight number: PVT123 BIKF 0800utc / 10MAY 1100utc / 10MAY Flight number: PVT456 1200utc / 10MAY EFHK 1345utc / 10MAY NPVT123 10MAY 009G159 BIKF1100 D / RE.N125GA/ N PVT456 10MAY 009G159 1200EFHK D / RE.N125GA/ Possible replies from the Coordinator KPVT123 10MAY 009G159 BIKF1100 D / RE.N125GA/ K PVT456 10MAY 009G159 1200EFHK D / RE.N125GA/ Or if the requested airport slots are not available. (Action code U ) The nearest available slots have been allocated. UPVT123 10MAY 009G159 BIKF1100 D KPVT123 10MAY 009G159 BIKF1050 D / RE.N125GA RA.1100 CA.UA/ U PVT456 10MAY 009G159 1200EFHK D K PVT456 10MAY 009G159 1205EFHK D / RE.N125GA RD.1200 CA.UA/
Cancellation of cleared slots If a cleared slot is to be cancelled, it is important to make sure that the flight details are identical with the originally cleared airport slot. If this is not the case, the cancellation request can not be processed. DPVT123 10MAY 009G159 BIKF1050 D / RE.N125GA/ D PVT456 10MAY 009G159 1205EFHK D / RE.N125GA/ Possible reply from the Coordinator XPVT123 10MAY 009G159 BIKF1050 D / RE.N125GA/ X PVT456 10MAY 009G159 1205EFHK D / RE.N125GA/
Changing a cleared slot (registration registration or Flt. Number Flt. Number) Flight details can be changed by using a combination of the action codes C and R. The C line defines the existing slot clearance originally allocated by the coordinator and the R line defines the new slots details requiring slot clearance. It is important to make sure that the flight details in the C line are identical with the originally allocated and confirmed airport slot. Example: Change in time with flight nbr. CPVT123 10MAY 009G159 BKIF1050 D RPVT123 10MAY 009G159 BKIF1205 D C PVT456 10MAY 009G159 1250BKIF D R PVT456 10MAY 009G159 1405BKIF D GI BRGDS. Example: Change in time with registration COYABC 10MAY 009G159 BKIF1050 D ROYABC 10MAY 009G159 BKIF1205 D C OYABC 10MAY 009G159 1250BKIF D R OYABC 10MAY 009G159 1405BKIF D GI BRGDS.